| Patents for C22B 7 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof (11,341) |
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| 12/19/1978 | US4130627 Process for recovering mineral values from fly ash |
| 12/19/1978 | CA1044468A1 Extracting of iron ore and chromium from nickel lateritic ores |
| 12/12/1978 | US4129440 Expansion, elutriation, pulping, comminution, pyrolysis |
| 12/05/1978 | US4128415 Aluminum scrap reclamation |
| 11/28/1978 | US4127639 Precipitation as silver sulfide |
| 11/28/1978 | CA1043110A1 Method for the collection of dust of a high zinc content during the production of reduced iron pellets |
| 11/21/1978 | US4126673 Method for processing dross |
| 11/07/1978 | US4124459 Process for removing mercury from brine sludges |
| 10/31/1978 | US4123257 Method of treating a plating sludge |
| 10/10/1978 | US4119455 Method of recovering iron-bearing by-product flue dust |
| 09/19/1978 | CA1038736A1 Copper and copper alloy etching solutions and process |
| 09/12/1978 | US4113481 Green balls formed by agglomerating wet-collected fume produced in metallurgical furnaces |
| 09/05/1978 | CA1037720A1 Process for producing high-grade metallic products from solid slags and high-grade metallic products |
| 08/29/1978 | US4110398 Metal separation from dragstream material of refining process |
| 08/29/1978 | US4110107 Process for reducing molten furnace slags by carbon injection |
| 08/29/1978 | CA1037262A1 Zinc oxide recovery process |
| 08/22/1978 | US4108644 Manufacture of reactive metals and alloys |
| 08/22/1978 | US4108638 Process for separating nickel, cobalt and copper |
| 08/22/1978 | US4108635 Solder skimmings recovery process |
| 08/22/1978 | CA1036827A1 Process for separating a noble metal from an alloy containing same |
| 08/15/1978 | US4107265 Treating residues from the leaching of roasted zinc blende |
| 08/15/1978 | CA1036361A1 Method for agglomerating steel plant waste dusts |
| 08/01/1978 | US4104055 Recovering metallic values |
| 07/11/1978 | US4100251 Method of recovering metals out of soot originating from the combustion of oil |
| 06/27/1978 | US4097270 Reacting with silica to form magnesium oxide |
| 06/27/1978 | US4097027 Device and process for limiting surface oxidation of glowing hot metal dross |
| 05/30/1978 | US4091825 Recovery of unoxidized metals from organic insulated metallic scrap |
| 05/02/1978 | US4087510 Process for extracting metals from spent desulphurization catalysts |
| 04/25/1978 | US4086083 Recovering material |
| 04/25/1978 | US4085923 Furnaces |
| 04/18/1978 | US4084957 Process for producing shaped bodies |
| 04/11/1978 | US4083717 Separation of three metallurgical phases by decantation |
| 03/28/1978 | US4081506 Drying, grinding, roasting with sulfur, leaching |
| 03/14/1978 | US4078918 Method for precious metal recovery |
| 03/07/1978 | US4078039 Recovering titanium |
| 02/28/1978 | US4076605 Dichromate leach of copper anode slimes |
| 02/28/1978 | US4076521 Method for continuously blowing materials into molten slags |
| 02/21/1978 | US4075284 Process for the removal of sulfur oxides by the use of activated alumina |
| 02/21/1978 | US4075277 Process for recovering molybdenum values from spent catalysts |
| 02/21/1978 | US4075067 Production of aluminium |
| 02/21/1978 | US4075008 Method for the reclamation of zinc from galvanizing baths |
| 02/21/1978 | US4074865 Method of recovering platinum group metal values from a used washcoated catalyst |
| 02/07/1978 | US4072503 Thermal treatment of leaching residue from hydrometallurgical zinc production |
| 01/31/1978 | US4071422 Sulfuric acid, precipitation of zinc ammonium sulfate |
| 01/31/1978 | US4071357 Process for recovering zinc from steel-making flue dust |
| 01/24/1978 | US4070437 Process for the recovery of metal chlorides from jarosite sludges resulting from the sulphuric acid processing of ores |
| 01/17/1978 | US4069315 Recovery of zinc from iron-making or steel-refining furnace dust |
| 01/03/1978 | US4066445 Process for producing magnesium utilizing aluminum metal reductant |
| 12/13/1977 | US4062531 Ferruginous slag oxidizing apparatus |
| 11/29/1977 | US4060408 Melting process |
| 11/15/1977 | US4058396 Molten alkali metal carbonate |
| 11/15/1977 | US4058394 Pyrometallurgical system for solid-liquid contacting |
| 11/08/1977 | US4057232 Press for separating molten metal from dross |
| 10/25/1977 | US4055251 Portable blast furnace slag beneficiating plant |
| 10/18/1977 | US4054638 Process for treating residues from the electrolytic processing of zinc, by recovery of the metals therein |
| 10/11/1977 | US4053553 Method for selective recovery of cadmium from cadmium-bearing waste |
| 10/04/1977 | US4052196 Method and apparatus of moistening charge material for an ore-dressing plant |
| 09/27/1977 | US4051221 Process for the separate recovery of vanadium and molybdenum |
| 09/27/1977 | US4050999 From dross, by digestion with water |
| 09/27/1977 | US4050925 Process for the production and use of activated alumina in refining steel |
| 09/13/1977 | US4047939 Leaching, sulfuric acid |
| 09/06/1977 | US4046323 Process for controlled slow cooling of non-ferrous smelting slags |
| 08/30/1977 | US4044459 High-grade metallic products |
| 08/23/1977 | US4043831 Densification of coal fly ash |
| 08/23/1977 | US4043804 Recovery of metal values from copper reverberatory slag |
| 08/23/1977 | US4043019 Method and arrangement for separating the material forming one part of an article from that forming another part thereof, particularly for use with metal-synthetic resin composites |
| 08/02/1977 | US4039614 Method of preparing vanadium pentoxide from metallurgical slags containing vanadium |
| 08/02/1977 | US4039323 Process for the recovery of bismuth |
| 08/02/1977 | US4039322 Method for the concentration of alkaline bismuthide in a material also containing molten lead |
| 08/02/1977 | US4039173 Aluminum dross recovery method |
| 07/26/1977 | US4038363 Upgrading sorelslag for production of synthetic rutile |
| 07/26/1977 | US4038066 Method of stripping base metals from fused salts |
| 07/19/1977 | US4036636 Flash furnace process |
| 07/19/1977 | US4036480 Centrifugal separation of mixtures of at least partially molten metals, metal compounds and/or metal-containing slags into individual constituents |
| 07/12/1977 | US4034861 Process and installation for recovering usable materials from waste material containing metals and non metals |
| 07/05/1977 | US4034063 Process for control of SOx emissions from copper smelter operations |
| 07/05/1977 | US4033761 Alkali metal sulfides |
| 07/05/1977 | US4033760 Aluminum nitrides, oxides |
| 07/05/1977 | US4033759 Process for producing magnesium utilizing aluminum metal reductant |
| 07/05/1977 | US4033758 Process for producing magnesium utilizing aluminum-silicon alloy reductant |
| 07/05/1977 | US4033563 Device for the separation of mixtures of at least partially molten metals, metal compounds and/or metal-containing slags in a centrifugal force field |
| 06/28/1977 | US4032327 Pyrometallurgical recovery of copper from slag material |
| 06/21/1977 | US4030916 High temperature reaction with carbon powder |
| 06/14/1977 | US4029495 Process for recovering a heavy metal catalyst component from a spent catalyst |
| 06/14/1977 | US4029494 Process for smelting and recovery of a material containing noble metals |
| 05/31/1977 | US4026477 Process for the separation of components of scrap storage batteries |
| 05/24/1977 | US4025335 Method for the recovery of useful metallic components |
| 05/10/1977 | US4022638 Continuous recovery of base metal from insulated wire scrap |
| 05/03/1977 | US4021367 Magnetic fields |
| 05/03/1977 | US4021235 Operating method for slag cleaning furnace in copper refining |
| 04/19/1977 | US4018680 Process for separating iron, zinc and lead from flue dust and/or flue sludge |
| 04/19/1977 | US4018567 Apparatus for separating the constituents of lead-acid storage batteries |
| 04/12/1977 | US4017308 Smelting and reduction of oxidic and sulphated lead material |
| 04/05/1977 | US4016054 Hydrometallurgical treatment process for extracting constituent metal values from ferro-nickel |
| 03/29/1977 | US4014681 Vehicle recycling process |
| 03/22/1977 | US4013456 Method for treating flue dust containing lead |
| 03/22/1977 | US4013278 Portable thermal metal refining apparatus |
| 03/22/1977 | US4013273 Method of, and mixer for intimate blending of fine, dry, particulate solid materials with moist wet or slurried particulate solid materials |
| 03/08/1977 | US4010935 High efficiency aluminum scrap melter and process therefor |
| 02/15/1977 | US4008077 Chelating agent, aluminum coated with alumina |